package com.liaozhai.community.controller;

import com.google.code.kaptcha.Producer;
import com.liaozhai.community.constant.CommunityConstant;
import com.liaozhai.community.entity.User;
import com.liaozhai.community.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Date;
import java.util.Map;

@Slf4j
@Controller
public class LoginController {

    @Autowired
    private UserService userService;

    @Autowired
    private Producer kaptchaProducer;

    @Value("server.servlet.context-path")
    private String contextPath;

    @GetMapping("/register")
    public String getRegisterPage(){
        return "/site/register";
    }

    @GetMapping("/login")
    public String getLoginPage(){
        return "/site/login";
    }

    @PostMapping("/register")
    public String register(Model model, User user){
        System.out.println(new Date());
        Map<String,Object> map = userService.register(user);
        if(map==null || map.isEmpty()){
            model.addAttribute("msg", "注册成功,我们已经向您的邮箱发送了一封激活邮件,请尽快激活!");
            model.addAttribute("target", "/index");
            System.out.println(new Date());
            return "/site/operate-result";
        }
        model.addAttribute("usernameMsg", map.get("usernameMsg"));
        model.addAttribute("passwordMsg", map.get("passwordMsg"));
        model.addAttribute("emailMsg", map.get("emailMsg"));
        return "/site/register";
    }

    // http://localhost:8080/community/activation/101/code
    @GetMapping(path = "/activation/{userId}/{code}")
    public String activation(Model model, @PathVariable("userId") int userId, @PathVariable("code") String code) {
        int result = userService.activation(userId, code);
        if (result == CommunityConstant.ACTIVATION_SUCCESS) {
            model.addAttribute("msg", "激活成功,您的账号已经可以正常使用了!");
            model.addAttribute("target", "/login");
        } else if (result == CommunityConstant.ACTIVATION_REPEAT) {
            model.addAttribute("msg", "无效操作,该账号已经激活过了!");
            model.addAttribute("target", "/index");
        } else {
            model.addAttribute("msg", "激活失败,您提供的激活码不正确!");
            model.addAttribute("target", "/index");
        }
        return "/site/operate-result";
    }

    @GetMapping("/kaptcha")
    public void getKaptcha(HttpServletResponse response, HttpSession session){
        //生成验证码
        String text = kaptchaProducer.createText();
        BufferedImage image = kaptchaProducer.createImage(text);

        //将验证码存入session
        session.setAttribute("kaptcha",text);

        //将图片输出给浏览器
        response.setContentType("image/png");
        try {
            ServletOutputStream os = response.getOutputStream();
            ImageIO.write(image,"png",os);
        } catch (IOException e) {
            log.error("响应验证码失败:" + e.getMessage());
        }
    }

    @RequestMapping(path = "/login", method = RequestMethod.POST)
    public String login(String username, String password, String code, boolean rememberme,
                        Model model, HttpSession session, HttpServletResponse response) {
        // 检查验证码
        String kaptcha = (String) session.getAttribute("kaptcha");
        if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code) || !kaptcha.equalsIgnoreCase(code)) {
            model.addAttribute("codeMsg", "验证码不正确!");
            return "/site/login";
        }

        // 检查账号,密码
        int expiredSeconds = rememberme
                ? CommunityConstant.REMEMBER_EXPIRED_SECONDS
                : CommunityConstant.DEFAULT_EXPIRED_SECONDS;
        Map<String, Object> map = userService.login(username, password, expiredSeconds);
        if (map.containsKey("ticket")) {
            Cookie cookie = new Cookie("ticket", map.get("ticket").toString());
            cookie.setPath(contextPath);
            cookie.setMaxAge(expiredSeconds);
            response.addCookie(cookie);
            return "redirect:/index";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            return "/site/login";
        }
    }

    @RequestMapping(path = "/logout", method = RequestMethod.GET)
    public String logout(@CookieValue("ticket") String ticket) {
        userService.logout(ticket);
        return "redirect:/login";
    }

}
